RT9276GQW Integrated Circuits (ICs)

PMIC - Voltage Regulators - DC DC Switching Regulators

RT9276GQW is a continuous time controller with high performance Buck DC/DC converter, setting and adaptive voltage regulators integrated in one single package. The RT9276QGQ is capable of switching up to 2A and regulated output voltages from 0.6V to 5.5V. The RT9276GQW utilizes an advanced and effective adaptive voltage control loop to maintain high accuracy output voltage. The integrated current monitoring function provides maximum current protection for safe and stable operation of DC/DC converter.

Application Field

The RT9276GQW is a highly integrated DC/DC controller that can be used in a wide range of applications, such as automotive electronics, consumer electronic and communication devices, industrial applications, and medical related equipment. It is suitable for on-board and off-board switching voltage regulators, such as power supply circuits, power amplifier circuits, battery charger circuits, etc.

Working Principle

The RT9276GQW consists of a high performance Buck DC/DC controller, an adaptive voltage regulators, and an adjustable current limiting circuit. The Buck DC/DC controller is capable of switching up to 2A outputs and has a fixed frequency of 300kHz. The adaptive voltage regulator is used to maintain the output voltage at a preset value. The adjustable current limit circuit limits the output current at high levels, providing over current protection and performance stability.

The DC/DC controller uses synchronous rectification to efficiently convert the input voltage to the output voltage. It uses a high-side and low-side MOSFET switch to perform the rectification process. The voltage control loop uses an effective current mode control for accurate voltage regulation. The voltage loop compares the output voltage with the internal reference voltage, and uses the difference to set the duty cycle of the high-side and low-side MOSFET switches.

The RT9276GQW also offers a current monitoring function with an adjustable comparator threshold. This allows the user to set the threshold of the current limit circuit to a certain level and prevent the output current from exceeding it. This is especially useful when driving high-power loads that require current limiting to prevent overcurrent damage.

Conclusion

The RT9276GQW is an advanced and highly integrated DC/DC controller which provides a wide range of features for efficient and reliable power conversion. This device is well suited for automotive electronics, consumer electronic, communication devices, industrial and medical related applications. It is capable of switching up to 2A outputs, offers high accuracy voltage regulation, and provides current monitoring with adjustable current limit thresholds for added protection.